Engine Self-Adaptive System for Throttle Response and Fuel Saving
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Solution Overview
Problem
Existing vehicle engine systems face inefficiencies in fuel consumption due to sudden throttle changes, leading to incomplete combustion, increased fuel consumption, and poor emissions, primarily caused by driver habits such as rapid acceleration and braking, which result in energy waste and inadequate engine response to increased fuel demands.
Innovation Solution
An engine self-adaptive system that utilizes a network of vehicle terminals and an information center to collect and analyze data on vehicle location, speed, engine torque, and throttle position, calculating resistance coefficients and determining optimal engine states to adjust throttle settings and ensure sufficient power while minimizing fuel usage, by employing a standard road resistance characteristic coefficient for improved engine control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the throttle changes stepwise to increase engine output torque, then the engine power increases rapidly, but the fuel injection amount cannot keep up with the required increase, resulting in incomplete combustion and increased fuel consumption
Solution Approach 1:
The system performs preliminary actions by predicting future throttle positions and pre-adjusting fuel injection amounts and engine parameters before the actual throttle change occurs. This allows the engine to respond smoothly to throttle changes without sudden fuel deficits that cause incomplete combustion, while maintaining the desired power increase.
Solution Approach 2:
The system dynamically adjusts fuel injection amounts, ignition timing, and other engine parameters in real-time based on predicted throttle trajectories and actual engine response. This dynamic adaptation ensures optimal combustion efficiency throughout the throttle transition, preventing energy loss from incomplete combustion while achieving the required power output.
2Speed
If the driver presses the gas pedal greatly for sudden acceleration, then the vehicle speed increases rapidly, but the engine response is insufficient and combustion is incomplete, leading to increased fuel consumption
Solution Approach 1:
When sudden acceleration is detected or predicted, the system performs preliminary actions by pre-increasing fuel injection amounts and adjusting engine parameters before the throttle reaches its final position. This ensures the engine is ready to deliver the required power immediately, achieving rapid vehicle acceleration without incomplete combustion and excessive fuel consumption.
Solution Approach 2:
The system dynamically adapts fuel injection and ignition timing based on the rate of throttle change and vehicle speed demands. During sudden acceleration, it optimizes the fuel-air mixture and combustion timing to maintain efficient combustion across the entire acceleration range, preventing energy loss while achieving the desired speed increase.
3Speed
If the driver releases the gas pedal after reaching expected speed, then the vehicle decelerates, but the sudden throttle closure causes engine output torque to drop sharply, requiring frequent braking and increasing energy waste
Solution Approach 1:
When throttle closure is detected or predicted, the system performs preliminary actions by gradually reducing fuel injection amounts and engine output torque before the throttle fully closes. This smooths the deceleration process, allowing the vehicle to maintain momentum longer and reduce the need for frequent braking, thereby minimizing energy waste.
Solution Approach 2:
The system dynamically adjusts engine parameters during throttle closure to optimize the deceleration profile. By coordinating fuel injection reduction with throttle position changes, it creates a smoother torque transition that complements driver intent and reduces energy loss from regenerative braking or friction braking.
4Productivity
If the throttle changes rapidly to meet fuel injection requirements, then the engine power responds quickly, but the mixture in the cylinder becomes too thick, causing incomplete combustion and poor emissions
Solution Approach 1:
The system performs preliminary actions by predicting throttle changes and pre-adjusting fuel injection amounts and air intake parameters. This ensures the air-fuel mixture remains within optimal combustion ratios throughout the throttle transition, preventing overly thick mixtures that cause incomplete combustion and harmful emissions, while maintaining quick engine response.
Solution Approach 2:
The system dynamically coordinates fuel injection, air intake, and ignition timing based on real-time throttle position and engine operating conditions. This dynamic control maintains optimal combustion across all throttle ranges, ensuring complete combustion even during rapid throttle changes, thereby reducing harmful emissions while preserving fast engine response.
Data Source
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AI summary
Disclosed are an engine self-adaptive system and fuel saving method based on vehicle operating condition, the engine self-adaptive system comprising an information center and vehicle terminals in communication with the information center. Each vehicle terminal comprises a GPS navigation module, a running vehicle data collection module, a vehicle specifications and engine operating states memory, a wireless communication module, a calculation module, a decision-making module, a vehicle control module, and a human interface module. The vehicle control module adjusts an engine response characteristic and reduces the effect of improper throttle operation. A standard road resistance characteristic coefficient is an optimum and has a higher reference value such that the invention, for ensuring power performance for a vehicle, achieves fuel saving by properly controlling engine output.